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Cheap flights from Incheon Intl Airport to Illinois from $386

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Illinois departing on 3/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Incheon Intl Airport to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:45 pm - 2:45 pm
ICN
-
ORD
35h 00m
1 stop
Air Canada Logo
3:40 pm - 4:05 pm
ORD
-
ICN
34h 25m
1 stop
$631Air Canada
Fri, May 15 - Sun, May 17
Air Canada Logo
5:45 pm - 10:18 am
ICN
-
ORD
30h 33m
2 stops
Air Canada Logo
3:40 pm - 4:05 pm
ORD
-
ICN
34h 25m
1 stop
$637Air Canada
Fri, May 15 - Sun, May 17
Air Canada Logo
5:45 pm - 5:01 pm
ICN
-
ORD
37h 16m
2 stops
Air Canada Logo
6:21 pm - 4:05 pm
ORD
-
ICN
55h 44m
2 stops
$650Air Canada
Fri, May 15 - Sun, May 17
Multiple Airlines Logo
5:45 pm - 6:46 am
ICN
-
ORD
27h 01m
2 stops
Multiple Airlines Logo
9:20 pm - 4:05 pm
ORD
-
ICN
28h 45m
2 stops
$653Multiple Airlines
Fri, Apr 24 - Mon, Apr 27
Asiana Airlines Logo
5:45 pm - 8:05 pm
ICN
-
STL
40h 20m
2 stops
Asiana Airlines Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
$661Asiana Airlines
Mon, May 4 - Thu, May 28
Multiple Airlines Logo
5:45 pm - 9:12 am
ICN
-
ORD
29h 27m
3 stops
Multiple Airlines Logo
9:20 pm - 4:05 pm
ORD
-
ICN
28h 45m
2 stops
$673Multiple Airlines
Fri, Apr 24 - Mon, Apr 27
Asiana Airlines Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Asiana Airlines Logo
7:30 am - 5:30 pm
STL
-
ICN
20h 00m
1 stop
$681Asiana Airlines
Mon, May 4 - Fri, May 29
Delta Logo
7:40 pm - 8:51 am
ICN
-
MDW
27h 11m
1 stop
Delta Logo
6:45 pm - 5:20 pm
MDW
-
ICN
32h 35m
1 stop
$1,144Delta
Wed, Apr 22 - Tue, Sep 29
Delta Logo
7:30 pm - 9:06 am
ICN
-
MDW
28h 36m
1 stop
Delta Logo
7:20 pm - 3:30 pm
MDW
-
ICN
30h 10m
1 stop
$1,145Delta
Mon, Feb 23 - Sun, Mar 8
Korean Air Logo
10:45 am - 4:21 pm
ICN
-
MLI
19h 36m
1 stop
Korean Air Logo
5:55 am - 3:55 pm
MLI
-
ICN
20h 00m
1 stop
$2,928Korean Air
Mon, Jun 15 - Tue, Aug 18

Air Canada flights from Incheon Intl Airport to Illinois

Our best Air Canada deals on Incheon Intl Airport to Illinois flight tickets
Air Canada
May 15
ICN5:45 pmIncheon Intl
35h 00m
1 stop
ORD2:45 pmChicago O'Hare Intl
May 17
ORD3:40 pmChicago O'Hare Intl
34h 25m
1 stop
ICN4:05 pmIncheon Intl
$631
Air Canada
May 15
ICN5:45 pmIncheon Intl
30h 33m
2 stops
ORD10:18 amChicago O'Hare Intl
May 17
ORD3:40 pmChicago O'Hare Intl
34h 25m
1 stop
ICN4:05 pmIncheon Intl
$637
Air Canada
May 15
ICN5:45 pmIncheon Intl
37h 16m
2 stops
ORD5:01 pmChicago O'Hare Intl
May 17
ORD6:21 pmChicago O'Hare Intl
55h 44m
2 stops
ICN4:05 pmIncheon Intl
$650

Asiana Airlines flights from Incheon Intl Airport to Illinois

Our best Asiana Airlines deals on Incheon Intl Airport to Illinois flight tickets
Asiana Airlines
May 4
ICN5:45 pmIncheon Intl
40h 20m
2 stops
STL8:05 pmLambert-St Louis
May 28
STL1:00 pmLambert-St Louis
37h 05m
2 stops
ICN4:05 pmIncheon Intl
$661
Asiana Airlines
May 4
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
May 29
STL7:30 amLambert-St Louis
20h 00m
1 stop
ICN5:30 pmIncheon Intl
$681
Asiana Airlines
May 20
ICN7:05 pmIncheon Intl
31h 01m
1 stop
STL12:06 pmLambert-St Louis
Jun 14
STL1:00 pmLambert-St Louis
37h 25m
1 stop
ICN4:25 pmIncheon Intl
$692

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 5/15

5:45 pm-2:45 pm

1 stop35h 00m

Chicago O'Hare Intl

Sun 5/17

3:40 pm-4:05 pm

1 stop34h 25m

$631

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 5/15

5:45 pm-10:18 am

2 stops30h 33m

Chicago O'Hare Intl

Sun 5/17

3:40 pm-4:05 pm

1 stop34h 25m

$637

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 5/15

5:45 pm-5:01 pm

2 stops37h 16m

Chicago O'Hare Intl

Sun 5/17

6:21 pm-4:05 pm

2 stops55h 44m

$650

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 4/24

5:45 pm-6:46 am

2 stops27h 01m

Chicago O'Hare Intl

Mon 4/27

9:20 pm-4:05 pm

2 stops28h 45m

$653

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-8:05 pm

2 stops40h 20m

Lambert-St Louis

Thu 5/28

1:00 pm-4:05 pm

2 stops37h 05m

$661

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Fri 4/24

5:45 pm-9:12 am

3 stops29h 27m

Chicago O'Hare Intl

Mon 4/27

9:20 pm-4:05 pm

2 stops28h 45m

$673

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Fri 5/29

7:30 am-5:30 pm

1 stop20h 00m

$681

IncheonChicago

ICN - MDW

ICNMDW

Incheon Intl

Wed 4/22

7:40 pm-8:51 am

1 stop27h 11m

Chicago Midway

Tue 9/29

6:45 pm-5:20 pm

1 stop32h 35m

$1,144

IncheonChicago

ICN - MDW

ICNMDW

Incheon Intl

Mon 2/23

7:30 pm-9:06 am

1 stop28h 36m

Chicago Midway

Sun 3/8

7:20 pm-3:30 pm

1 stop30h 10m

$1,145

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Mon 6/15

10:45 am-4:21 pm

1 stop19h 36m

Moline Quad-City

Tue 8/18

5:55 am-3:55 pm

1 stop20h 00m

$2,928

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Incheon Intl Airport to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Incheon Intl Airport is in December. Flight prices, which tend to average around $760, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of December, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $898.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Incheon Intl Airport to Illinois is on a Monday when prices can be found for as low as $1,356. Flights from Incheon Intl Airport to Illinois on a Wednesday will generally be more expensive and average around $1,536. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Incheon Intl to Illinois flight route?

Fly from Incheon Intl to Chicago O'Hare Intl for the best Incheon Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,189 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Incheon Intl Airport for as low as $814 on momondo.

What cabin class options are available on Incheon Intl to Illinois flights?

There are 4 cabin classes available to choose from on Incheon Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Incheon Intl Airport to Illinois flights?

You could potentially save up to 17% on your flight if you consider stops on a Incheon Intl Airport to Illinois flight.

Cheap Incheon Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to Illinois

Best Price Found

$1,134

Fastest flight time

13h 00m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Incheon Intl Airport in the past 72 hours is $1,134. The best round-trip flight deal from Incheon Intl Airport to Illinois found on momondo in the last 72 hours is $1,389.
The fastest flight from Incheon Intl Airport to Illinois takes 13h 00m
Direct flights go from Incheon Intl Airport to Illinois every day.
There are 98 airports in Illinois. From Incheon Intl Airport there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

  • When did momondo last update prices for flights from Incheon Intl Airport to Illinois?

    Prices for flights from Incheon Intl Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Incheon Intl Airport to Illinois?

  • How old do you have to be to fly from Incheon Intl Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Incheon Intl Airport to Illinois?

Best airlines flying from Incheon Intl Airport to Illinois

Compare and see reviews for airlines that fly from Incheon Intl Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $197Free CancellationRating
8.0
11,843 reviews
Search Alaska Airlines flights
DeltaPriceFrom $229Free CancellationRating
7.9
8,154 reviews
Search Delta flights
Asiana AirlinesPriceFrom $558Free CancellationRating
8.1
503 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,241 reviews
Search United Airlines flights
Korean AirPriceFrom $687Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Air CanadaPriceFrom $730Free CancellationRating
7.1
10,696 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seoul to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seoul to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Seoul which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seoul to Illinois?

Once all potential Seoul to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seoul to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Seoul. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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